hmm yes i suppose. To tell you the truth, i think we can last on oil; just not when everyone is using it. When NEED oil prices to increase to limit our use of it. This will lead to less demand on the oil. Since oil prices will be high, more people will invest in renewable energy, such as solar or wind power. Also this will cause the government to decrease restrictions on nuclear power this means that more nuclear power plants will be built to supply us with cheap electrical power.
So lets say, we do find a new energy scource, how will technology change lol???